Add more defaults to the stdlib (#9606)

Continuing work towards #8988.

The first five commits were created using stubdefaulter on various Python versions; the following commits were all created manually by me to fix various problems. The main things this adds that weren't present in #9501 are:

- Defaults in Windows-only modules and Windows-only branches (because I'm running a Windows machine)
- Defaults in non-py311 branches
- Defaults for float parameters
- Defaults for overloads

stdlib/webbrowser.pyi

@@ -58,7 +58,7 @@ class Grail(BaseBrowser):
 
 if sys.platform == "win32":
     class WindowsDefault(BaseBrowser):
-        def open(self, url: str, new: int = ..., autoraise: bool = ...) -> bool: ...
+        def open(self, url: str, new: int = 0, autoraise: bool = True) -> bool: ...
 
 if sys.platform == "darwin":
     class MacOSX(BaseBrowser):